• 11029 引用
  • 47 h指数
1974 …2020

年単位の研究成果

Pureに変更を加えた場合、すぐここに表示されます。

研究成果

フィルター
Conference contribution
2019

Broadband Far-infrared Spectroscopic Identification and Quantification of Antioxidants in Polymeric Insulation

Ogishima, T., Kozai, T., Hirai, N. & Ohki, Y., 2019 2 13, ICHVE 2018 - 2018 IEEE International Conference on High Voltage Engineering and Application. Institute of Electrical and Electronics Engineers Inc., 8641948. (ICHVE 2018 - 2018 IEEE International Conference on High Voltage Engineering and Application).

研究成果: Conference contribution

1 引用 (Scopus)

Degradation in Dielectric Behavior of Soft Epoxy Resin by Concurrent Aging with Heat and Radiation

Ishii, H., Yamaguchi, H., Mori, K., Hirai, N. & Ohki, Y., 2019 10, 2019 IEEE Conference on Electrical Insulation and Dielectric Phenomena, CEIDP 2019 - Proceedings. Institute of Electrical and Electronics Engineers Inc., p. 18-21 4 p. 9010557. (Annual Report - Conference on Electrical Insulation and Dielectric Phenomena, CEIDP; 巻数 2019-October).

研究成果: Conference contribution

Degradation in Mechanical and Dielectric Properties of Silicone Rubber under Severe Aging Conditions

Hirai, N., Kaneko, T., Ito, S., Minakawa, T. & Ohki, Y., 2019 10, 2019 IEEE Conference on Electrical Insulation and Dielectric Phenomena, CEIDP 2019 - Proceedings. Institute of Electrical and Electronics Engineers Inc., p. 126-129 4 p. 9009713. (Annual Report - Conference on Electrical Insulation and Dielectric Phenomena, CEIDP; 巻数 2019-October).

研究成果: Conference contribution

Degradation of silicone rubber analyzed by instrumental analyses and dielectric spectroscopy

Ohki, Y., Hirai, N., Min, D., Yang, L. & Li, S., 2019 1 1, Minerals, Metals and Materials Series. Springer International Publishing, p. 1323-1332 10 p. (Minerals, Metals and Materials Series).

研究成果: Conference contribution

1 引用 (Scopus)

Evaluation of Aging Status of Flame-retardant Cross-linked Polyethylene by Measuring Indenter Modulus

Yang, Z., Hirai, N. & Ohki, Y., 2019 4, ICEMPE 2019 - 2nd International Conference on Electrical Materials and Power Equipment, Proceedings. Institute of Electrical and Electronics Engineers Inc., p. 57-60 4 p. 8727348. (ICEMPE 2019 - 2nd International Conference on Electrical Materials and Power Equipment, Proceedings).

研究成果: Conference contribution

1 引用 (Scopus)

Origins of Chemiluminescence in Polymeric Insulating Materials

Ohki, Y., Fujishima, D., Okamoto, M. & Hirai, N., 2019 4, ICEMPE 2019 - 2nd International Conference on Electrical Materials and Power Equipment, Proceedings. Institute of Electrical and Electronics Engineers Inc., p. 12-16 5 p. 8727389. (ICEMPE 2019 - 2nd International Conference on Electrical Materials and Power Equipment, Proceedings).

研究成果: Conference contribution

1 引用 (Scopus)

Relation between the Glass Transition and Dielectric Properties in Bisphenol A and F Epoxy Resins

Mori, K., Hirai, N., Ohki, Y., Otake, Y., Umemoto, T. & Muto, H., 2019 10, 2019 IEEE Conference on Electrical Insulation and Dielectric Phenomena, CEIDP 2019 - Proceedings. Institute of Electrical and Electronics Engineers Inc., p. 426-429 4 p. 9010555. (Annual Report - Conference on Electrical Insulation and Dielectric Phenomena, CEIDP; 巻数 2019-October).

研究成果: Conference contribution

Successful detection of insulation degradation in cables by frequency domain reflectometry

Ohki, Y. & Hirai, N., 2019 1 1, Minerals, Metals and Materials Series. Springer International Publishing, p. 1293-1301 9 p. (Minerals, Metals and Materials Series).

研究成果: Conference contribution

2018

Aging State Analysis of Safety-related Cables for Nuclear Power Plants Exposed to Simulated Accident Conditions

Minakawa, T., Ikeda, M., Hirai, N. & Ohki, Y., 2018 11 26, 2018 IEEE CEIDP Conference on Electrical Insulation and Dielectric Phenomena, CEIDP 2018. Institute of Electrical and Electronics Engineers Inc., 巻 2018-October. p. 602-605 4 p. 8544872

研究成果: Conference contribution

2 引用 (Scopus)

A Significant Contribution of Dr. Hoashi to the Theory on Electric Circuits

Ohki, Y., 2018 11 14, 2017 IEEE HISTory of ELectrotechnolgy CONference, HISTELCON 2017. Institute of Electrical and Electronics Engineers Inc., p. 19-22 4 p. 8535638

研究成果: Conference contribution

Degradation behavior and mechanisms of several polymeric insulating materials exposed to heat and radiation

Yang, L., Ohki, Y., Hirai, N. & Li, S., 2018 2 2, 2017 3rd International Conference on Condition Assessment Techniques in Electrical Systems, CATCON 2017 - Proceedings. Institute of Electrical and Electronics Engineers Inc., 巻 2018-January. p. 98-103 6 p.

研究成果: Conference contribution

Degradation of silicone rubber analyzed by instrumental analyses and dielectric spectroscopy

Ohki, Y., Hirai, N., Min, D., Yang, L. & Li, S., 2018 1 1, Proceedings of the 18th International Conference on Environmental Degradation of Materials in Nuclear Power Systems – Water Reactors. Springer International Publishing, p. 107-116 10 p. (Minerals, Metals and Materials Series; 巻数 Part F11).

研究成果: Conference contribution

Dielectrophoresis-Assisted SPRF illumination biosensor for selective detection of biological substances

Kuroda, C., Ohki, Y. & Fujimaki, M., 2018 1 12, CEIDP 2017 - IEEE Conference on Electrical Insulation and Dielectric Phenomenon. Institute of Electrical and Electronics Engineers Inc., 巻 2017-October. p. 253-256 4 p.

研究成果: Conference contribution

1 引用 (Scopus)

Effects of Heat and Radiation Aging and Burning on the Surface Physical Properties of Polymer-Insulated Cables

Ito, S., Hirai, N., Minakawa, T., Kuroda, C. & Ohki, Y., 2018 11 26, 2018 IEEE CEIDP Conference on Electrical Insulation and Dielectric Phenomena, CEIDP 2018. Institute of Electrical and Electronics Engineers Inc., 巻 2018-October. p. 374-377 4 p. 8544768

研究成果: Conference contribution

1 引用 (Scopus)

Effects of Heat and Radiation on the Terahertz Absorption in Silicone Rubber

Kaneko, T., Hirai, N. & Ohki, Y., 2018 9 19, 2018 IEEE 2nd International Conference on Dielectrics, ICD 2018. Institute of Electrical and Electronics Engineers Inc., p. 223DUMMY 8470044

研究成果: Conference contribution

1 引用 (Scopus)

Location Attempt of Multiple Heated Spots in a Polymer-insulated Coaxial Cable by Frequency Domain Reflectometry

Hirai, N. & Ohki, Y., 2018 11 14, 2018 Condition Monitoring and Diagnosis, CMD 2018 - Proceedings. Abu-Siada, A. (版). Institute of Electrical and Electronics Engineers Inc., 8535734

研究成果: Conference contribution

2 引用 (Scopus)

Similarity in degradation behavior by heat and irradiation between ethylene-propylene-diene rubber and silicone rubber

Ohki, Y., Kotani, H., Fujishima, D. & Hirai, N., 2018 1 12, CEIDP 2017 - IEEE Conference on Electrical Insulation and Dielectric Phenomenon. Institute of Electrical and Electronics Engineers Inc., 巻 2017-October. p. 157-160 4 p.

研究成果: Conference contribution

2 引用 (Scopus)

Successful detection of insulation degradation in cables by frequency domain reflectometry

Ohki, Y. & Hirai, N., 2018 1 1, Proceedings of the 18th International Conference on Environmental Degradation of Materials in Nuclear Power Systems – Water Reactors. Springer International Publishing, p. 77-85 9 p. (Minerals, Metals and Materials Series; 巻数 Part F11).

研究成果: Conference contribution

2 引用 (Scopus)

Terahertz absorption spectra of polyphenylene sulfide sheets with different degrees of crystallinity

Azeyanagi, C. & Ohki, Y., 2018 1 12, CEIDP 2017 - IEEE Conference on Electrical Insulation and Dielectric Phenomenon. Institute of Electrical and Electronics Engineers Inc., 巻 2017-October. p. 429-432 4 p.

研究成果: Conference contribution

Terahertz time-domain spectroscopic analyses on crystallinity of several organic polymers

Ohki, Y., Azeyanagi, C., Kaneko, T. & Hirai, N., 2018 6 29, ICPADM 2018 - 12th International Conference on the Properties and Applications of Dielectric Materials. Institute of Electrical and Electronics Engineers Inc., 巻 2018-May. p. 86-89 4 p.

研究成果: Conference contribution

2017

Correlation between indenter modulus and elongation-at-break observed for four electrical insulating polymers

Hirai, N. & Ohki, Y., 2017 12 4, Proceedings of 2017 International Symposium on Electrical Insulating Materials, ISEIM 2017. Institute of Electrical Engineers of Japan, 巻 2. p. 753-756 4 p.

研究成果: Conference contribution

4 引用 (Scopus)

Effects of addition of MgO fillers with various sizes and co-addition of nano-sized SiO2 fillers on the dielectric properties of epoxy resin

Yanashima, R., Hirai, N. & Ohki, Y., 2017 12 4, Proceedings of 2017 International Symposium on Electrical Insulating Materials, ISEIM 2017. Institute of Electrical Engineers of Japan, 巻 2. p. 650-653 4 p.

研究成果: Conference contribution

4 引用 (Scopus)

Improved high-temperature dielectric property of epoxy resin composites with nano- and micro-sized magnesia fillers

Xie, Q., Ohki, Y., Hirai, N. & Cheng, Y. H., 2017 5 31, 2017 IEEE International Workshop on Integrated Power Packaging, IWIPP 2017. Institute of Electrical and Electronics Engineers Inc., 7936745

研究成果: Conference contribution

1 引用 (Scopus)

Insulation performance of safety-related cables for nuclear power plants under simulated severe accident conditions

Minakawa, T., Ikeda, M., Hirai, N. & Ohki, Y., 2017 12 4, Proceedings of 2017 International Symposium on Electrical Insulating Materials, ISEIM 2017. Institute of Electrical Engineers of Japan, 巻 2. p. 716-719 4 p.

研究成果: Conference contribution

1 引用 (Scopus)

Terahertz absorption spectra of antioxidants in insulating polymers

Kozai, T., Kaneko, T., Hirai, N. & Ohki, Y., 2017 10 27, Proceedings of 2017 International Symposium on Electrical Insulating Materials, ISEIM 2017. Institute of Electrical Engineers of Japan, p. 61-64 4 p. (Proceedings of the International Symposium on Electrical Insulating Materials; 巻数 1).

研究成果: Conference contribution

Terahertz absorption spectroscopy of poly(ether ether ketone)

Kaneko, T., Hirai, N. & Ohki, Y., 2017 12 4, Proceedings of 2017 International Symposium on Electrical Insulating Materials, ISEIM 2017. Institute of Electrical Engineers of Japan, 巻 2. p. 539-542 4 p.

研究成果: Conference contribution

3 引用 (Scopus)
2016

Aging mechanism of silicone rubber by heat and gamma-rays

Ohki, Y., Hanada, S., Miyamoto, M., Hirai, N. & Yang, L., 2016 12 15, 2016 IEEE Conference on Electrical Insulation and Dielectric Phenomena, CEIDP 2016. Institute of Electrical and Electronics Engineers Inc., 巻 2016-December. p. 869-872 4 p. 7785487

研究成果: Conference contribution

6 引用 (Scopus)

Chemiluminescence characteristics of FR-EPDM and SiR aged by concurrently-given heat and radiation

Ikeno, R., Hirai, N. & Ohki, Y., 2016 12 15, 2016 IEEE Conference on Electrical Insulation and Dielectric Phenomena, CEIDP 2016. Institute of Electrical and Electronics Engineers Inc., 巻 2016-December. p. 853-856 4 p. 7785443

研究成果: Conference contribution

3 引用 (Scopus)

Comparison of location abilities of degradation in a polymer-insulated cable between frequency domain reflectometry and line resonance analysis

Ohki, Y. & Hirai, N., 2016 12 27, ICHVE 2016 - 2016 IEEE International Conference on High Voltage Engineering and Application. Institute of Electrical and Electronics Engineers Inc., 7800602

研究成果: Conference contribution

1 引用 (Scopus)

Fault location in a cable for a nuclear power plant by frequency domain reflectometry

Ohki, Y. & Hirai, N., 2016 11 28, CMD 2016 - International Conference on Condition Monitoring and Diagnosis. Institute of Electrical and Electronics Engineers Inc., p. 36-39 4 p. 7757782

研究成果: Conference contribution

9 引用 (Scopus)

Non-destructive diagnosis of degradation of silicone rubber by indenter modulus and scanning probe microscopy

Hanada, S., Odaka, D., Yang, L., Hirai, N. & Ohki, Y., 2016 11 28, CMD 2016 - International Conference on Condition Monitoring and Diagnosis. Institute of Electrical and Electronics Engineers Inc., p. 123-126 4 p. 7757791

研究成果: Conference contribution

3 引用 (Scopus)

Observation of crystal growth in polyethylene naphthalate by terahertz spectroscopy

Odaka, D., Komatsu, M. & Ohki, Y., 2016 8 18, Proceedings of the 2016 IEEE International Conference on Dielectrics, ICD 2016. Institute of Electrical and Electronics Engineers Inc., 巻 1. p. 593-596 4 p. 7547674

研究成果: Conference contribution

2 引用 (Scopus)

Space charge distributions in epoxy/MgO nanocomposites at various temperatures

Xie, Q., Cheng, Y. H., Hirai, N. & Ohki, Y., 2016 12 27, ICHVE 2016 - 2016 IEEE International Conference on High Voltage Engineering and Application. Institute of Electrical and Electronics Engineers Inc., 7800636

研究成果: Conference contribution

7 引用 (Scopus)

Terahertz spectroscopic diagnosis of degradation of ethylene-propylene-diene copolymer

Ohki, Y., Kozai, T., Komatsu, M. & Hirai, N., 2016 8 18, Proceedings of the 2016 IEEE International Conference on Dielectrics, ICD 2016. Institute of Electrical and Electronics Engineers Inc., 巻 2. p. 646-649 4 p. 7547698

研究成果: Conference contribution

2015

Analysis on the thickness and temperature dependent DC breakdown of low density polyethylene

Min, D., Li, S. & Ohki, Y., 2015 10 8, Proceedings of the IEEE International Conference on Properties and Applications of Dielectric Materials. Institute of Electrical and Electronics Engineers Inc., 巻 2015-October. p. 368-371 4 p. 7295285

研究成果: Conference contribution

3 引用 (Scopus)

Dielectric relaxation phenomena of several insulating polymers analyzed by electric modulus spectra

Ohki, Y., 2015 10 8, Proceedings of the IEEE International Conference on Properties and Applications of Dielectric Materials. Institute of Electrical and Electronics Engineers Inc., 巻 2015-October. p. 192-195 4 p. 7295241

研究成果: Conference contribution

3 引用 (Scopus)

Effects of gamma irradiation on the dielectric properties of dicyclopentadiene resin and epoxy resin

Miyamoto, M., Tomite, N. & Ohki, Y., 2015 10 8, Proceedings of the IEEE International Conference on Properties and Applications of Dielectric Materials. Institute of Electrical and Electronics Engineers Inc., 巻 2015-October. p. 488-491 4 p. 7295315

研究成果: Conference contribution

Estimation of the number of nucleotides with thymine in deoxyribonucleic acid by far-infrared absorption

Kitamura, A., Komatsu, M., Ohki, Y., Mizuno, M., Hirabayashi, M. & Kojima, H., 2015 12 9, Annual Report - Conference on Electrical Insulation and Dielectric Phenomena, CEIDP. Institute of Electrical and Electronics Engineers Inc., 巻 2015-December. p. 617-620 4 p. 7351989

研究成果: Conference contribution

2 引用 (Scopus)

Influence of cable structure on the fault location by frequency domain reflectometry

Ohki, Y. & Hirai, N., 2015 12 9, Annual Report - Conference on Electrical Insulation and Dielectric Phenomena, CEIDP. Institute of Electrical and Electronics Engineers Inc., 巻 2015-December. p. 274-277 4 p. 7352023

研究成果: Conference contribution

6 引用 (Scopus)

Terahertz and far-infrared spectroscopic estimation of vinyl acetate content in ethylene-vinyl acetate copolymer

Izutsu, T., Odaka, D., Komatsu, M., Ohki, Y., Mizuno, M., Nakamura, Y. & Chiwata, N., 2015 12 9, Annual Report - Conference on Electrical Insulation and Dielectric Phenomena, CEIDP. Institute of Electrical and Electronics Engineers Inc., 巻 2015-December. p. 39-42 4 p. 7351988

研究成果: Conference contribution

1 引用 (Scopus)

Terahertz spectroscopic observation of oxidation of ethylene-propylene-diene-copolymer

Komatsu, M., Izutsu, T., Ohki, Y., Mizuno, M. & Fukunaga, K., 2015 10 8, Proceedings of the IEEE International Conference on Properties and Applications of Dielectric Materials. Institute of Electrical and Electronics Engineers Inc., 巻 2015-October. p. 544-547 4 p. 7295329

研究成果: Conference contribution

5 引用 (Scopus)

THz absorption of adenine base in single-stranded deoxyribonucleic acid

Komatsu, M., Ohki, Y. & Mizuno, M., 2015 11 11, IRMMW-THz 2015 - 40th International Conference on Infrared, Millimeter, and Terahertz Waves. Institute of Electrical and Electronics Engineers Inc., 7327841

研究成果: Conference contribution

2014

Analyses of various insulating polymers by broadband dielectric spectroscopy

Ohki, Y., Hasegawa, Y., Takihana, J., Fukunaga, K., Mizuno, M. & Sasaki, K., 2014 12 22, 2014 IEEE Conference on Electrical Insulation and Dielectric Phenomena, CEIDP 2014. Institute of Electrical and Electronics Engineers Inc., p. 582-585 4 p. 6995841

研究成果: Conference contribution

2 引用 (Scopus)

Analysis on thermally stimulated currents in polyethylene-terephthalate and polyethylene-naphthalate

Yang, P., Ohki, Y. & Tian, F., 2014 1 1, Proceedings of 2014 International Symposium on Electrical Insulating Materials, ISEIM 2014. Institute of Electrical Engineers of Japan, p. 401-404 4 p. 6870804. (Proceedings of the International Symposium on Electrical Insulating Materials).

研究成果: Conference contribution

3 引用 (Scopus)

Chemiluminescence due to oxidation of ethylene propylene diene copolymers

Ohki, Y. & Hirai, N., 2014 12 22, 2014 IEEE Conference on Electrical Insulation and Dielectric Phenomena, CEIDP 2014. Institute of Electrical and Electronics Engineers Inc., p. 425-428 4 p. 6995786

研究成果: Conference contribution

3 引用 (Scopus)

Comparison of dielectric properties among polydicyclopentadiene resin, epoxy resin and their composites with microsized SiO2 fillers

Masuzaki, Y., Ohki, Y. & Kozako, M., 2014 1 1, Proceedings of 2014 International Symposium on Electrical Insulating Materials, ISEIM 2014. Institute of Electrical Engineers of Japan, p. 374-377 4 p. 6870797. (Proceedings of the International Symposium on Electrical Insulating Materials).

研究成果: Conference contribution

13 引用 (Scopus)

Crystalline structures of YAlO3 single crystal at high temperatures

Inoue, T., Morimoto, T., Kaneko, S., Horii, Y. & Ohki, Y., 2014 1 1, Proceedings of 2014 International Symposium on Electrical Insulating Materials, ISEIM 2014. Institute of Electrical Engineers of Japan, p. 208-211 4 p. 6870755. (Proceedings of the International Symposium on Electrical Insulating Materials).

研究成果: Conference contribution

2 引用 (Scopus)

Highly sensitive detection of distorted points in a cable by frequency domain reflectometry

Hirai, N. & Ohki, Y., 2014 1 1, Proceedings of 2014 International Symposium on Electrical Insulating Materials, ISEIM 2014. Institute of Electrical Engineers of Japan, p. 144-147 4 p. 6870741. (Proceedings of the International Symposium on Electrical Insulating Materials).

研究成果: Conference contribution

10 引用 (Scopus)

Microfluidic sedimentation system for separation of plasma from whole blood

Kuroda, C., Ohki, Y., Ashiba, H., Fujimaki, M., Awazu, K., Tanaka, T. & Makishima, M., 2014 12 12, Proceedings of IEEE Sensors. December 版 Institute of Electrical and Electronics Engineers Inc., 巻 2014-December. p. 1854-1857 4 p. 6985389

研究成果: Conference contribution

5 引用 (Scopus)

Structural change induced in LaAlO3 by ion implantation

Harima, M., Horii, Y., Morimoto, T. & Ohki, Y., 2014 1 1, Proceedings of 2014 International Symposium on Electrical Insulating Materials, ISEIM 2014. Institute of Electrical Engineers of Japan, p. 180-183 4 p. 6870748. (Proceedings of the International Symposium on Electrical Insulating Materials).

研究成果: Conference contribution

1 引用 (Scopus)